Divisors in the moduli spaces of curves
Algebraic Geometry
2008-12-19 v2
Abstract
In this mostly expository paper we review several known results about the cohomology of moduli spaces of smooth and stable curves, focusing in particular on low degree cohomology. We also give a new proof of Harer's theorem describing the second cohomology group of the moduli space of smooth n-pointed curves of given genus
Cite
@article{arxiv.0810.5373,
title = {Divisors in the moduli spaces of curves},
author = {Enrico Arbarello and Maurizio Cornalba},
journal= {arXiv preprint arXiv:0810.5373},
year = {2008}
}
Comments
18 pages, 1 figure; written for Surveys in Differential Geometry. Minor mistakes corrected, references added